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Benzoic Acid Extra Pure Amaris Chemicals
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LABORATORY GRADE

Benzoic Acid Extra Pure

Original price was: $ 18.00.Current price is: $ 17.67.

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Benzoic Acid Extra Pure is a high-purity, white crystalline solid widely used in laboratory chemistry for analytical, organic, and preparative applications. It serves as a fundamental compound in the study of carboxylic acids, esterification reactions, and recrystallization techniques. Its well-defined melting point and chemical stability make it ideal for calibration and thermal analysis. Additionally, benzoic acid is commonly employed as a preservative standard and in pH-buffering studies. The extra pure grade ensures minimal contamination, offering reliability and accuracy in high-precision experiments. It should be stored in a cool, dry place in a tightly sealed container, away from strong oxidizers.

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Description

Benzoic Acid Extra Pure

Primary Uses

  1. Standard for Calibration and Melting Point Determination
    • Used as a melting point calibration substance due to its sharp melting point (~122°C).
    • Also serves as a standard for acid-base titration or enthalpy of combustion experiments.
  2. Reagent in Organic Synthesis
    • Acts as a precursor in synthesizing various esters, amides, and benzoyl derivatives in organic reaction studies and student experiments.
  3. Preparation of Benzoate Esters
    • Used in esterification experiments (e.g., reaction with ethanol to form ethyl benzoate) to teach reaction mechanisms and purification techniques.
  4. Teaching Functional Group Identification
    • Common in qualitative organic analysis to show carboxylic acid group reactions — such as salt formation, decarboxylation, or neutralization.

Secondary Uses

  1. Reference Compound in Thermochemical Studies
    • In bomb calorimetry, benzoic acid is used as a calorimetric standard for determining heat of combustion.
  2. pH Studies and Buffer Systems
    • In combination with its salt (sodium benzoate), it can be used to prepare buffer solutions for pH control in experiments.
  3. Crystallization and Purification Practice
    • Frequently used in teaching recrystallization techniques, as it forms well-defined crystals and illustrates solubility behavior.
  4. Model for Substituted Aromatic Chemistry
    • Its structure is used in studying substituent effects in aromatic systems (meta-/para- directing effects in EAS).
Additional information
PACK SIZE500 grams Plastic Tin
KEY PRODUCT FEATURES

1. Basic Identification Attributes

  • Chemical Name: Benzoic Acid
  • CAS Number: 65-85-0
  • HS Code: 2916.31.00
  • Molecular Formula: C₇H₆Oâ‚‚
  • Molar Mass: 122.12 g/mol
  • Synonyms:
    • Carboxybenzene
    • Phenylformic acid
    • Benzene carboxylic acid

2. Physical & Chemical Properties

  • Physical State: Solid (crystalline powder)
  • Color & Odor: White crystals or flakes with a faint pleasant odor
  • Melting Point: 122.4 °C
  • Boiling Point: 249.2 °C (with decomposition)
  • Density: 1.265 g/cm³
  • Solubility:
    • In Water: Slightly soluble (3.4 g/L at 25 °C)
    • Soluble in: Ethanol, ether, acetone, chloroform
  • pKa (acid dissociation constant): ~4.2
  • Vapor Pressure: Low (0.1 mmHg at 100 °C)

3. Safety & Hazard Attributes 

  • GHS Classification:
    • Eye Irritation (Category 2A)
    • Skin Irritation (Category 2)
    • STOT – Single Exposure (Category 3, Respiratory tract irritation)
  • NFPA Ratings:
    • Health: 1
    • Flammability: 1
    • Reactivity: 0
  • Exposure Limits:
    • No established OSHA PEL or ACGIH TLV; handle with general lab safety practices
  • Reactivity:
    • Stable under recommended conditions
    • Reacts with strong oxidizing agents and strong bases

4. Storage & Handling Attributes

  • Storage Conditions:
    • Store in tightly closed containers
    • Cool, dry, well-ventilated area
  • Incompatible Materials:
    • Strong oxidizers, strong bases
  • Container Type:
    • HDPE bottles or amber glass jars for long-term storage
  • Shelf Life:
    • Stable for several years if stored properly
  • Special Handling Requirements:
    • Avoid inhalation of dust
    • Use in fume hood if heating or weighing large quantities
    • Wear lab coat, gloves, goggles

5. Regulatory & Compliance Attributes

  • Regulatory Status:
    • Listed under TSCA, REACH, and FDA (as a preservative, outside lab use)
  • GHS Hazard Pictograms:
  • UN Number: Not classified as hazardous for transport in small lab quantities
  • Waste Disposal Method:
    • Dispose via chemical waste program in accordance with local environmental regulations

6. Environmental & Health Impact

  • Ecotoxicity:
    • Harmful to aquatic life at high concentrations
  • Biodegradability:
    • Readily biodegradable
  • Toxicological Note:
    • Low acute toxicity
    • May cause skin or eye irritation with prolonged exposure
SAFETY HANDLING PRECAUTIONS

 SAFETY PRECAUTIONS

  1. Personal Protective Equipment (PPE):
    • Wear lab coat, protective gloves (nitrile or neoprene), and safety goggles.
    • Use a dust mask or work under a fume hood if handling large quantities of powder.
  2. Handling:
    • Avoid inhaling dust or fumes.
    • Prevent contact with eyes and skin.
    • Handle with care to avoid spills and airborne particles.
  3. Storage:
    • Store in a cool, dry, well-ventilated area.
    • Keep the container tightly closed and away from strong oxidizers and moisture.
  4. Hygiene Measures:
    • Wash hands thoroughly after handling.
    • Do not eat, drink, or smoke in the lab during handling.

FIRST AID MEASURES

  1. Inhalation:
    • Move to fresh air immediately.
    • Seek medical attention if respiratory irritation persists.
  2. Skin Contact:
    • Wash thoroughly with soap and water.
    • Remove contaminated clothing.
  3. Eye Contact:
    • Rinse cautiously with water for at least 15 minutes.
    • Seek medical help if irritation continues.
  4. Ingestion:
    • Rinse mouth.
    • Do not induce vomiting unless instructed by medical personnel.
    • Seek medical advice promptly.

FIRE FIGHTING MEASURES

  1. Extinguishing Media:
    • Use water spray, dry chemical, foam, or carbon dioxide (COâ‚‚).
  2. Fire Hazards:
    • Combustible solid; may emit irritating or toxic fumes (carbon monoxide/dioxide) when burned.
    • Fine dust may form explosive mixtures in air.
  3. Protective Equipment:
    • Wear self-contained breathing apparatus (SCBA) and fire-resistant clothing.
  4. Firefighting Instructions:
    • Cool surrounding containers with water.
    • Avoid letting water runoff contaminate the environment.

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